ASTROSAT CZTI

Data Quality Report

Orbit 57983

Creation date: 2026-06-18T17:55:03.986724
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_031T01_9000006584_57983cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57983cztM0_level2_quad_clean.evt
Size (bytes)1,416,409,920270,037,440
Size1.3 GB 257.5 MB
Events in quadrant A9,838,2331,789,864
Events in quadrant B17,309,3201,722,034
Events in quadrant C13,685,1031,648,725
Events in quadrant D10,016,0341,606,727

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0443372
B0652932
C0549952
D0440862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04120
B04120
C04120
D04120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204425502.690539%
B20443231211.309495%
C2044311405.576481%
D204434061.986010%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 21584 20624 121 121 0.56% 0.59%
B 21585 20625 1373 1373 6.36% 6.66%
C 21585 20625 767 767 3.55% 3.72%
D 21585 20625 85 85 0.39% 0.41%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 251 760193 1344.87 2295 2231 563.6
A 12 3 79917 137.84 2295 2231 563.6
A 3 14 78231 134.85 2295 2231 563.6
B 10 128 7486405 15881.95 2181 2094 471.2
B 5 185 186274 390.83 2181 2094 471.2
B 4 171 123120 256.82 2181 2094 471.2
C 15 224 4143570 6917.81 2204 2187 598.7
C 12 252 301989 500.79 2204 2187 598.7
C 6 223 250886 415.43 2204 2187 598.7
D 12 110 435142 697.13 2220 2126 621.1
D 8 240 182352 290.15 2220 2126 621.1
D 5 173 176875 281.33 2220 2126 621.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter